Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisation
To investigate the effect of microbial inoculum on soil heavy metal immobilisation, pot experiments were conducted with paddy soils contaminated by cadmium (Cd), lead (Pb), arsenic (As), and mercury (Hg), respectively. The results showed that the inoculation of Rhodopseudomonas palustris was more ef...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2021-01-01
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| Series: | Plant, Soil and Environment |
| Subjects: | |
| Online Access: | https://pse.agriculturejournals.cz/artkey/pse-202101-0008_inoculation-of-paddy-soils-with-rhodopseudomonas-palustris-enhanced-heavy-metal-immobilisation.php |
| _version_ | 1797898060291899392 |
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| author | Xian Xiao Yan Zhu Yuexiang Gao Jing Fu Yuan Zhao Lihua Zhao |
| author_facet | Xian Xiao Yan Zhu Yuexiang Gao Jing Fu Yuan Zhao Lihua Zhao |
| author_sort | Xian Xiao |
| collection | DOAJ |
| description | To investigate the effect of microbial inoculum on soil heavy metal immobilisation, pot experiments were conducted with paddy soils contaminated by cadmium (Cd), lead (Pb), arsenic (As), and mercury (Hg), respectively. The results showed that the inoculation of Rhodopseudomonas palustris was more effective in the immobilisation of Pb and Cd in soils than the composite of R. palustris and Bacillus subtilis. Interestingly, a lower dosage of inoculum immobilised significantly more heavy metals than the higher dosage, potentially due to the competition of bacteria with limited nutrients. The heavy metal contents in rice grains also supported this finding, as less Pb and Cd were accumulated under the lower dosage. However, there were limited effects of microbial inoculations on the immobilisation of Hg and As. In general, our study indicated the effectiveness of R. palustris in immobilising Pb and Cd in soils and highlighted the importance of determining the optimal dosage of inoculum in bioremediation. |
| first_indexed | 2024-04-10T08:07:14Z |
| format | Article |
| id | doaj.art-2f339c67bb834eee958166f612d17654 |
| institution | Directory Open Access Journal |
| issn | 1214-1178 1805-9368 |
| language | English |
| last_indexed | 2024-04-10T08:07:14Z |
| publishDate | 2021-01-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Plant, Soil and Environment |
| spelling | doaj.art-2f339c67bb834eee958166f612d176542023-02-23T03:46:59ZengCzech Academy of Agricultural SciencesPlant, Soil and Environment1214-11781805-93682021-01-01671556010.17221/355/2020-PSEpse-202101-0008Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisationXian Xiao0Yan Zhu1Yuexiang Gao2Jing Fu3Yuan Zhao4Lihua Zhao5School of Environmental and Safety Engineering, Changzhou University, Changzhou, P.R. ChinaSchool of Environmental and Safety Engineering, Changzhou University, Changzhou, P.R. ChinaNanjing Institute of Environmental Sciences, Ministry of Environmental Protection of China, Nanjing, P.R. ChinaSchool of Environmental and Safety Engineering, Changzhou University, Changzhou, P.R. ChinaSchool of Environmental and Safety Engineering, Changzhou University, Changzhou, P.R. ChinaXinjiang Guang He Yuan Biological Technology Co., Ltd., Changji, P.R. ChinaTo investigate the effect of microbial inoculum on soil heavy metal immobilisation, pot experiments were conducted with paddy soils contaminated by cadmium (Cd), lead (Pb), arsenic (As), and mercury (Hg), respectively. The results showed that the inoculation of Rhodopseudomonas palustris was more effective in the immobilisation of Pb and Cd in soils than the composite of R. palustris and Bacillus subtilis. Interestingly, a lower dosage of inoculum immobilised significantly more heavy metals than the higher dosage, potentially due to the competition of bacteria with limited nutrients. The heavy metal contents in rice grains also supported this finding, as less Pb and Cd were accumulated under the lower dosage. However, there were limited effects of microbial inoculations on the immobilisation of Hg and As. In general, our study indicated the effectiveness of R. palustris in immobilising Pb and Cd in soils and highlighted the importance of determining the optimal dosage of inoculum in bioremediation.https://pse.agriculturejournals.cz/artkey/pse-202101-0008_inoculation-of-paddy-soils-with-rhodopseudomonas-palustris-enhanced-heavy-metal-immobilisation.phpco-inoculationtoxic elementoryza sativa l.biosorbentcontamination |
| spellingShingle | Xian Xiao Yan Zhu Yuexiang Gao Jing Fu Yuan Zhao Lihua Zhao Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisation Plant, Soil and Environment co-inoculation toxic element oryza sativa l. biosorbent contamination |
| title | Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisation |
| title_full | Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisation |
| title_fullStr | Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisation |
| title_full_unstemmed | Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisation |
| title_short | Inoculation of paddy soils with Rhodopseudomonas palustris enhanced heavy metal immobilisation |
| title_sort | inoculation of paddy soils with rhodopseudomonas palustris enhanced heavy metal immobilisation |
| topic | co-inoculation toxic element oryza sativa l. biosorbent contamination |
| url | https://pse.agriculturejournals.cz/artkey/pse-202101-0008_inoculation-of-paddy-soils-with-rhodopseudomonas-palustris-enhanced-heavy-metal-immobilisation.php |
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